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Series 191 / 192
6.3
Replacement of valve gate / mechanism unit
1.
Vent chambers on either side to atmospheric pressure.
2.
Open the valve.
3.
Disconnect compressed air supply.
4.
Disconnect electrical power supply.
5.
Remove the screws (3) from the body cover (7) in crosswise order; see «Figure 6-1» on
page 18.
6.
Lift actuator / mechanism unit carefully from body without touching the body wall.
7.
If the mechanism unit is out of the valve body you have the opportunity to clean the
mechanism unit with alcohol.
8.
If the plate seal at the mechanism unit and the bonnet seal (4) are not damaged you
should clean them with cleanroom wiper.
9.
Lift the actuator / mechanism unit back into the valve body.
600246EA
MAINTENANCE
Loaded spring steel sheet
Human body parts may get jammed and severely injured.
Do not put human body parts between valve gate and spring steel sheet.
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.
Inappropriate tools
Sealing surfaces may get damaged.
Do not use sharp-edged tools.
Do not touch the actuator with the lifting ropes, if you lift the actuator +
mechanism out of the valve body!
Do not clean the Sealing with alcohol, because alcohol may damage the
surface of the Sealing, by O-ring sealing, we recommend to treat it with a
small amount of vacuum grease.
Edition 2018-08-22
WARNING
NOTICE
NOTICE
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